Commit 839fe15b authored by Seth Rohit's avatar Seth Rohit Committed by David Mosberger

[PATCH] ia64: 2nd update for HugeTLB Page patch for IA-64 2.5.60 kernel

Please find attached a small hugetlb page support update for 2.5.60
IA-64 kernel (+ my previous hugetlb page patch).  This patch adds the
HAVE_ARCH_HUGETLB_UNMAPPED_AREA define for IA-64 arch.
hugetlb_get_unmapped_area function is added in
arch/ia64/mm/hugetlbpage.c
parent 6e7a4839
......@@ -33,17 +33,8 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
return -ENOMEM;
#ifdef CONFIG_HUGETLB_PAGE
#define COLOR_HALIGN(addr) ((addr + HPAGE_SIZE - 1) & ~(HPAGE_SIZE - 1))
#define TASK_HPAGE_BASE ((REGION_HPAGE << REGION_SHIFT) | HPAGE_SIZE)
if (filp && is_file_hugepages(filp)) {
if ((REGION_NUMBER(addr) != REGION_HPAGE) || (addr & (HPAGE_SIZE -1)))
addr = TASK_HPAGE_BASE;
addr = COLOR_HALIGN(addr);
}
else {
if (REGION_NUMBER(addr) == REGION_HPAGE)
addr = 0;
}
#endif
if (!addr)
addr = TASK_UNMAPPED_BASE;
......
......@@ -19,6 +19,8 @@
#include <linux/sysctl.h>
#define TASK_HPAGE_BASE (REGION_HPAGE << REGION_SHIFT)
static long htlbpagemem;
int htlbpage_max;
static long htlbzone_pages;
......@@ -312,6 +314,29 @@ int hugetlb_prefault(struct address_space *mapping, struct vm_area_struct *vma)
return ret;
}
unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
unsigned long pgoff, unsigned long flags)
{
struct vm_area_struct *vmm;
if (len > RGN_MAP_LIMIT)
return -ENOMEM;
if (len & ~HPAGE_MASK)
return -EINVAL;
/* This code assumes that REGION_HPAGE != 0. */
if ((REGION_NUMBER(addr) != REGION_HPAGE) || (addr & (HPAGE_SIZE - 1)))
addr = TASK_HPAGE_BASE;
else
addr = ALIGN(addr, HPAGE_SIZE);
for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) {
/* At this point: (!vmm || addr < vmm->vm_end). */
if (REGION_OFFSET(addr) + len > RGN_MAP_LIMIT)
return -ENOMEM;
if (!vmm || (addr + len) <= vmm->vm_start)
return addr;
addr = ALIGN(vmm->vm_end, HPAGE_SIZE);
}
}
void update_and_free_page(struct page *page)
{
int j;
......
......@@ -57,6 +57,7 @@
# define REGION_SHIFT 61
# define HPAGE_SIZE (__IA64_UL_CONST(1) << HPAGE_SHIFT)
# define HPAGE_MASK (~(HPAGE_SIZE - 1))
# define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
#endif /* CONFIG_HUGETLB_PAGE */
#ifdef __ASSEMBLY__
......
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